Trolley-pole head.



No. 767,939. PATLNTLD AOG. le, 1904.

- .J.E'..GRLENWOOD..

' TROLLEY POLE HEAD.

APPLIOATION FILED AUG. 2O, 190s.

NOMODBL.

{Encanto/L @78671 zuooclj citizen of the United States, residing at Utica,

Patented August 16, 1904.

JOHN E. GREENWOOD, OF UTIOA, NEW YORK.

TROLLEY-POLE HEAD.

SPECIFICATION VTO if/ZZ Uh/0712, t ina/y concern: Y

Be it known that I, JOHN EJGREENWOOD, a

in the county-of Oneida and State of New York',

:haveinventednew and useful Improvements in Trolley-Pole Heads, of which the following isa specification. A l

My invention has relation to new and useful improvements in trolley-pole heads for overn headelectric railways, and more especially to heads of that class which embody a plurality o f-wheels or collectors which are arranged in tandeml and adapted to simultaneously travel upon the-line wire or conductor.

`The object of the invention'is to construct a head. ofthe character mentioned'which will I provide for an operative contact of the collec- .tors with the. line -wire without-regard to curves, inequalities, and obstructions therein yand which will not become displaced by the `swaying movement of the car during its progress along the line. p

The invention consists of a trolley-pole having a iiexible terminal on which is movably mounted a cap-piece lcarrying oppositely-dis posed members provided with collectors, said members -being independently movable to cause them to readily adapt themselves to the `line-wire, and means to limit the movement of the members and to maintain the latter in longitudinal alinement.

'I have fully and clearly illustrated my invention in the accompanying drawings, forming a part of this specification, and Wlierein- Figure 1 is a view in side elevation of a trolley-pole and head embodying my invention `and showing the same in operative contact with the wire. Fig. 2 is a central vertical longitudinal section through the invention. Fig. 3 1s a central transverse vertical section. Fig.

I4 is a section on the line 4 4 of Fig. l, and- Fig.

5 is a perspective view of one of the wheelharps. v l Y, f

Referring to the drawings, 1 designates the upper end of a trolley-pole, which is formed with a recess or socket f2, in which is seated and rigidly secured, by means of transverse bolts 3, one end of a flexible bar or member'4,

which I have shown as consisting of a fiat leafspring which is arranged to lie ina vertical forming part of Letters Patent NQ. 767,939, dated August 16, 1904,- 'Application fiediiug'ust 29,1903. sereine. 171,267. (Nomodei.)

plane'. This member extends vertically for the required distance in order to bring'it into Aproximity to the line-wire and is'formedat its upper free end or terminal with an enlarged head 5, which is formed with atransverseaperture 6, substantially as shown in'Fig. 3 of the drawings.l

7 designates a cap-piece which is constructed to support and carry the collectorcarrying lmembers and the means for vlimiting their movement and maintaining them inllongitudinal alineinent. This cap-piece `is formed with depending arms 8 8, which -are Yspaced apart from eachother and are adapted'tobe arranged upon either side of the head 5 on the pole, to which they are pivotally connectedlby means of a bolt 9, which is projected :transversely through the arms and the aperture 6 in the head 5 and issecured-in-position by means of a nut 10. Rising from thesides-of the body of cap-piece are oppositely-disposed vertical ymembers 11 11, which extend Aupwardly for a short distance and are connected at their top portions by means of a transverse member 12, which serves to strengthen and brace the members 11, the said verticaly members and transverse member being so arranged as to provide a space 13 throughthe cap-piece, which is substantially rectangular in crosssection.

. Projected downwardly through apertures in the member 12, extending across the space 13 and threaded into apertures 14 in the body of the cap-piece, are vertical pivot pins or bolts 15, upon each of which is pivotally'mounted one end of a horizontally-disposed member 16, thevsaid members being directed, respectively, iii opposite directions, so' that one member extends in front and the` other-in rear of thecap-piece. At the free ends thereof each of `the 'members 16 is formed `with vertical arms 17, which are spaced Aapart lfrom each i Yother and are formed attheir upper ends -with apertures 18 to receive a transverse pinl9,l

upon which the trolley-wheel 20 is rotatably mounted.

It will be seen from the above-description, taken inlconnection With the drawings, that the wlieel-carrying members, owing to their pivotal connection with the head, `are free to IOO swing laterally'in order to adapt themselves to the curves in the line-wire, so that the wheels carried thereby will run straight upon the wire, and that said members are independent of each other in their movement, so that one in passing from a curve onto a straight wire will immediately assume a straight position without regard to the collector-,which still remains on the curve.

For the purpose of limiting the lateral swing of the members 16 and returning them into longitudinal alinement when passing from a curved wire onto the straight line and for maintaining them in alined relation'I provide springs 2121, which are rigidly secured at their central portions to the vertical members 11 of the cap-piece and upon the inner face thereof, substantially as shown in the drawings. From the point at which they are secured to the cap-'piece the ends of the springs are directed in opposite directions in front and rear of said cap-piece and extend for a short distance beyond the ends of the members 16, where the said springs are slotted, as at V22, and secured together by means of headed fastenings 23, projected through the said slots, the slots providing for the free movement of the springs when the members 16 are swung on the pivots. As shown in the drawings, for a distance adjacent the end portions the springs 21 are directed inwardly into engagement with the sides of the said members 16, in which position they are held by the fastenings 23 in order that the force thereofl will be exerted directly and positively against said members. It will be seen that when the members 16 are swung laterally to accommodate the wheels to the course of the wire the movement thereof will be limited by the springs 21 and that in passing from a curved portion of the wire to the straight line the force of the springs will be exerted against said membersto return them to normal position-that is, in longitudinal alinement.

Upon the lower side of the member 16, which is in front during the progress of the car, is provided an eye 24, to which is secured one end of the trolley-rope 25, which is divided into two strands 26, which pass through guide-eyes 27 on the flexible bar 4. By this arrangement in manipulating the rope to place the collectors in engagement with the wire the pull exerted on the rope will serve to swing the cap-piece on its pivots to bring the members 16 in proper horizontal position to permit the simultaneous contact of the collectors with the wire.

In providing the upper end of the pole with the flexible member 4, upon which the head is mounted, it will be seen that the lateral displacement of the head from the wire incident to the swaying of the car is obviated. In passing' obstructions in the line-wire the head by being pivoted will upon striking said obstructions be tilted to permit the collcctors to ride thereunder and will again assume a horizontal position as soon as it passes onto the straight wire and be held there by the upward forcel exerted by the spring devices (not shown) with which the trolley-poles are usually provided.

Having thus fully described my invention, what I claim as new is- 1. The combination with a trolley-pole, of a cap-piece, horizontal oppositely-disposed collector-carrying members pivoted to the cappiece, and fiat springs secured at their centralportions to the cap-piece the end port-ions of the springsv engaging opposite sides of the said members to maintain them in longitudinal alinement.

2. The combination with a trolley-pole, of a cap-piece, horizontal oppositely-disposed collector-carrying members pivoted to the cappiece, fiat springs secured at their central portions on opposite sides of the cap-piece, said springs engaging' the sides of the members and projecting beyond the free ends thereof, said springs being movably connected at a point beyond the members.

3. The combination with a trolley-pole, of a cap-piece, horizontal oppositely-disposed collector-carrying members pivoted to the eappiece, Hat springs secured at their central portions on opposite sides of the cap-piece, said springs engaging the' sides of the members and projecting beyond the free ends thereof and having slots therein and bolts projecting through the slots.

4. The combination with a trolley-pole, of a cap-piece provided with vertical spaced members, horizontal oppositely-disposed collector-carrying members pivoted to the cappiece between the spaced members, Hat springs secured at their central portions to the spaced members, said springs engaging the sides of the members and projecting beyond the free ends thereof and having slots, and bolts projecting through the slots.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN E. GREENVVOOI).

lNlitnesses:

B. V. BUTTs, CHARLES M. RoBER'rs. 

